package day04;

public class SwitchCaseDemo {
    public static void main(String[] args) {
        int num=5;
        switch(num){
            case 1://if num=1
                System.out.println(111);
                break;
            case 2://以此为入口
                System.out.println(222);
                break;
            case 3:
                System.out.println(333);
                break;
            default:
                System.out.println(666);//所有case都未匹配时执行


        }
    }
}
